Photon scattering in a nuclear field with the formation of an electron-positron pair

1975 ◽  
Vol 18 (11) ◽  
pp. 1631-1632
Author(s):  
A. I. Smirnov
Keyword(s):  
Photon Scattering ◽  
Nuclear Field ◽  
Electron Positron ◽  
Electron Positron Pair

scholarly journals BFKL PHYSICS IN JET PRODUCTION AT e+e- COLLIDERS

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 209-211
Author(s):  
LYNNE H. ORR ◽  
W. J. STIRLING
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Cross Section ◽  
Virtual Photon ◽  
Bfkl Equation ◽  
Photon Scattering ◽  
Kinematic Constraints ◽  
Large Rapidity ◽  
Electron Positron ◽  
Electron Positron Pair

Virtual photon scattering in e+e- collisions can result with the electron-positron pair at large rapidity separation with hadronic activity in between. The BFKL equation resums large logarithms that dominate the cross section for this process. We report here on a Monte Carlo method for solving the BFKL equation that allows kinematic constraints to be taken into account and show results for e+e- collisions.

scholarly journals Electron–positron pair production by linearly polarized photon in the nuclear field

2008 ◽  
Vol 660 (5) ◽  
pp. 494-500 ◽  
Author(s):  
S. Bakmaev ◽  
E.A. Kuraev ◽  
I. Shapoval ◽  
Yu.P. Peresun'ko
Keyword(s):  
Pair Production ◽  
Nuclear Field ◽  
Electron Positron ◽  
Linearly Polarized ◽  
Electron Positron Pair

Vacuum polarization and particle creation in the presence of a potential step

2016 ◽  
Vol 31 (02n03) ◽  
pp. 1641031 ◽  
Author(s):  
S. P. Gavrilov ◽  
D. M. Gitman
Keyword(s):  
Electric Potential ◽  
Canonical Quantization ◽  
Particle Creation ◽  
Pair Creation ◽  
Dirac Field ◽  
Potential Step ◽  
Electron Positron ◽  
Physical Impact ◽  
Particle Interpretation ◽  
Electron Positron Pair

We consider QED with strong external backgrounds that are concentrated in restricted space areas. The latter backgrounds represent a kind of spatial x-electric potential steps for charged particles. They can create particles from the vacuum, the Klein paradox being closely related to this process. We describe a canonical quantization of the Dirac field with x-electric potential step in terms of adequate in- and out-creation and annihilation operators that allow one to have consistent particle interpretation of the physical system under consideration and develop a nonperturbative (in the external field) technics to calculate scattering, reflection, and electron-positron pair creation. We resume the physical impact of this development.

Electron-Positron Pair Production in an Elliptic Polarized Time Varying Field

2012 ◽  
Vol 29 (2) ◽  
pp. 021102 ◽  
Author(s):  
Bai-Song Xie ◽  
Mohamedsedik Melike ◽  
Dulat Sayipjamal
Keyword(s):  
Pair Production ◽  
Time Varying ◽  
Electron Positron ◽  
Electron Positron Pair

scholarly journals Diverse Features of the Multiwavelength Afterglows of Gamma-Ray Bursts: Natural or Special?

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
J. J. Geng ◽  
Y. F. Huang
Keyword(s):  
Black Holes ◽  
Numerical Method ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Shock Model ◽  
Reverse Shock ◽  
X Ray ◽  
Electron Positron ◽  
Forward Shock ◽  
Electron Positron Pair

The detection of optical rebrightenings and X-ray plateaus in the afterglows of gamma-ray bursts (GRBs) challenges the generic external shock model. Recently, we have developed a numerical method to calculate the dynamics of the system consisting of a forward shock and a reverse shock. Here, we briefly review the applications of this method in the afterglow theory. By relating these diverse features to the central engines of GRBs, we find that the steep optical rebrightenings would be caused by the fall-back accretion of black holes, while the shallow optical rebrightenings are the consequence of the injection of the electron-positron-pair wind from the central magnetar. These studies provide useful ways to probe the characteristics of GRB central engines.

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